Machine for and method of inserting fastenings



June 19, 1934. LA CHAPELLE 1,963,169

MACHINE FOR AND METHOD OF INSERTING FASTENINGS Filed Oct. 25, 1952 Patented June 19, 1934 UN'ETED STATES PATENT OFFICE MACHINE FOR AND METHOD OF INSERTING FASTENINGS Application October 25,

18 Claims.

This invention relates to fastening inserting machines and is illustrated herein as embodied in a machine particularly adapted to insert paper pegs in the manufacture of boots and shoes.

Paper pegs of the type disclosed and claimed in United States Letters Patent No. 1,729,169, granted September 24, 1929, on an application filed in my name are successfully and extensively used for fastening together shoe parts either temporarily or permanently. It is sometimes difficult, however, to anchor pegs securely in thin stock. For example, in laying outsoles of McKay shoes pegs are driven through an outsole and through an upper and insole to secure the shoe parts temporarily prior to the insertion of permanent fastenings such as stitches. If the insole is formed of thin stock it is sometimes difficult to anchor the pegs in the insole securely enough to prevent some separation of the out- 20 sole from the shoe which tends to interfere with the subsequent insertion of the sole attaching stitching.

An object of this invention, accordingly, is to provide an improved fastening inserting machine arranged to overcome the above-mentioned difficulties. In accordance with this object one feature of the invention consists in means for forming a fastening the entering end of which will have an increased tendency to broom or clench when it has passed through the stock into which it is driven. As illustrated, the machine embodying the present invention is provided with a knife arranged to form a cut or slit in the end of the fastening. When a peg having a slit entering end is inserted in a work piece, such as a shoe, the end of thepeg will strike the bottom of the last or the surface of the work support by which the shoe is carried and will broom or spread, thus anchoring the fastening securely even in thin stock.

In another aspect the invention provides a method of inserting fastenings which comprises slitting the entering end of a fastening to cause the fastening to broom when the fastening has passed through a work piece into which it is driven.

The novel features of the invention will now be more particularly described by reference to the accompanying drawing and thereafter pointed out in the claims. r

In the drawing,

Fig. 1 is a view in side elevation of a part a machine embodying the present invention;

Fig. 2 is a view partly in section showing the position of the fastening severing and transfer- 1932, Serial No. 639,493

ring means during the awl stroke of the machine;

Fig. 31s a view similar to Fig. 2 showing the position of the parts prior to the fastening inserting stroke of the machine;

Fig. 4 is a plan view of the parts of the machine shown in Figs. 2 and 3;

Fig. 5 is a sectional view taken along the line VV of Fig. 4;

Fig. 6 is a perspective view of the fastening severing and transferring member, partly in section, showing the position of the parts prior to severing a fastening; and

Fig. 7 is a sectional view on an enlarged scale through the nozzle of the machine and through a shoe in which a fastening has been inserted.

Although the present invention is illustrated as embodied in a machine of the type disclosed in United States Letters Patent No. 1,802,900, granted April 28, 1931 on an application filed in the names of Fred N. La Chapelle and Fred C. Eastman, it is to be understood that the invention is not limited in its utility to use in ma;

chines of this type but can be used in other types of machines. a

In machines of the type disclosed in said Let-- ters Patent a single tool 10 acts both as an awl and as a driver. The tool 10 is secured to the lower end of a driver bar 12 which isprovided at its upper end with teeth 14 engaging teeth formed on the end of a lever 16. The lever 16 is provided with a slot 18 into which fits a block (not shown) pivoted on a bar 20. The bar 20 at its lower end engages a lifting cam 22 mounted on a cam shaft 23. The cam 22 raises the bar 20 against the pressure of a heavy coiled spring located at the rear end of the lever 16, one end of the spring being shown at 24 in Fig. 1. When the bar 20 drops off of a high part of the cam 20 the tool 10 is forced toward the work by the spring. The lever 16 is fulcrumed at 26 to a lever 28 which in turn is fulcrumed in the machine frame at 30. The lever 28 is raised and lowered by mechanism described in detail in said Letters Patent to vary the lower limits of theoperating strokes of the tool 10. That is, when the tool 10 is acting as an awl the fulcrum 26 is raised; thereby permitting the tool to project beyond the lower end of a nozz1e'32 at the end of its awl stroke. When the tool 10 is acting as a driver. the fulcrum 26 is lowered to prevent the tool 10 from projecting beyond the end of a nozzle 32 at the conclusion of the driver stroke, thereby inserting a fastening flush with the work.

The lower end of the tool 10 is arranged to reciprocate in a guide 34 formed in a member 36 in which is reciprocated a transfer bar 38. This bar 38 is provided at its forward end with a hole 40 which at the beginning of the cycle of operation is in alinement with a hole formed in a bushing 41 mounted in the member 36. A fastening guiding tube 42, through which fastening material 44 is fed to the hole 40 in the bar or member 38, is secured in the bushing 41. When the fastening material 44 has been fed into the hole 40 by any usual feeding device the bar 38 is moved forwardly by connections to a cam 46 on the shaft 23. The upper surface 48 of the bar 38 co-operates with a flat surface formed in the member 36 to sever a fastening 50 from the fastening material 44. Continued forward movement of the bar 38 will bring the hole 40 and the fastening 50 contained therein into alinement with the tool 10 which has just been returned to its initial position after having formed a fastening receving hole in the work piece. The parts of the machine described briefly above are described in detail in the above-mentioned Letters Patent to which reference may be had'for a more complete description.

The transfer bar 38, as shown in Figs. 5 and 6, is cut away to provide a fiatinclined surface to which a cutting member or knife 52 is secured by a screw 54. 'The cutting edge 56 of the knife 52 extends above the top of the transfer bar in such a manner that when the transfer bar is moved forwardly to move a fastening into alinement with the tool 10, the cutting edge 56 will cut through the end of the fastening material 44 to form a cut or slit 58 therein. The lower end of the cut or slit 58 is spaced from the longitudinal median line of the fastening material 44 a distance less than the radius of thefastening material and extends upwardly to a point substantially equidistant from the other side of the median line or axis of the fastening material. In other words, the knife 52 makes a cut or slit intersecting the longitudinal axis of the fastening material but does not sever a piece therefrom. The cutting edge 56 of the knife 52 slides in a slot 60 formed in the member 36 which carries the transfer bar 38. The cut 58 is formed in the end of the fastening material 10 just after a peg 50 has been severed. When the machine performs its next cycle of operations the cut 58 will be at the entering end of the next peg. When the peg is driven through an outsole 61 and through an upper 63 and an insole 66 the end of the peg will strike the bottom plate 62 on a last 64 and, because of the cut 58, the'entering end of the peg will broom or spread in the insole 66. This spreading or expanding of the peg 50 will cause the peg to fit more tightly in the fastening receiving hole in the insole, thus securely anchoring the peg in the work.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States is: j

1. In a machine for inserting fastenings, means for severing fastenings from a length of fastening material, means for/driving the severed fastenings into a work piece, and means for forming slits in the entering ends of the fastenings, before they are driven, in a manner which will facilitate their brooming when they have passed through a work piece and strike a work support.

2. A machine for inserting fastenings having, in combination, a tool for driving fastenings into a work piece, means for severing fastenings from a length of fastening material, and means for slitting the ends of said fastenings to cause them to spread upon passing through the work piece and striking a work support.

3. In a machine for inserting fastenings, means for forming a slit in the end of a length of fastening material, means for severing a fastening hav ing a slit end from the length of fastening material, and a tool for inserting said fastening into a work piece to cause the entering end of the fastening to spread when the fastening meets a predetermined resistance, thereby anchoring the fastening in the work.

4. In a machine for inserting fastenings, means for forming a slit in the end of a length of fastening material, means for severing a fastening from said length of fastening material, and a driver for inserting said fastening into a Work piece arranged to cause the slit entering end of the fastening to spread when the fastening meets an excessive resistance, thereby anchoring the fastening securely in the work.

5. In a machine for inserting fastenings, a member for severing a fastening from a length of fastening material, a knife for forming a slit in the end of the fastening material, and a tool for inserting said fastening into a work piece arranged to cause the entering end of the fastening to spread when the fastening meets an excessive resistance, thereby anchoring the fastening in the work.

6. In a machine for inserting fastenings, a driver for inserting fastenings into a work piece, means for severing fastenings from a length of fastening material and for feeding said fastenings into alinement with the driver, and means for forming a slit in the end of the fastening material, whereby the ends of the fastenings spread when the fastenings meet an excessive resistance, thereby anchoring the fastenings in the work.

7. In a machine for inserting fastenings, a tool 1 acting as an awl to form a fastening receiving hole in a work piece and as a driver to insert a fastening in said hole, means for forming a slit in the end of a strip of fastening material, and means for severing a fastening from the length of fastening material the end of which has been slit and for moving said fastening into the line of drive of said tool, whereby the entering end of the fastening spreads when the fastening meets an excessive resistance, thereby securely 1;,

anchoring the fastening in the work.

8. In-a fastening inserting machine, a member for severing a fastening from a length of fastening material and for transferring the fastening into driving position, a knife secured to said fastening severing member arranged to form a slit in the end of the fastening material, thereby providing a slit in the entering end of the next fastening to be severed from the length of fastening material, and a tool for inserting said fastening into a work piece, whereby the entering end of the fastening spreads when the fastening meets a predetermined resistance.

9. In a machine for inserting fastenings, means for severing from a length of fastening material a fastening having a slit entering end and for moving the fastening into the line of drive of a fastening inserting tool, means for forming a slit in the new end of the length of fastening material, and a tool acting both as an awl to form a fastening receiving hole in the work piece and as a driver to insert the fastening in said hole, whereby when the fastening meets an excessive resistance its entering end spreads to anchor the fastening in the work.

10. In a fastening inserting machine, a fastening inserting .tool acting both as an awl to form a fastening receiving hole in a work piece and as a driver to insert a fastening in the fastening receiving hole, a member for severing a fastening from a length of fastening material and for moving said fastening into the line of drive of said tool, and a knife mounted on said member for forming a slit in the end of the fastening material, whereby when the fastening meets an excessive resistance its end spreads to anchor the fastening in the work.

11. In a machine for inserting fastenings, a fastening inserting tool acting both as an awl to form a fastening receiving hole in the work piece and as a driver to insert a fastening in said hole, a member for severing from a length of fastening material a fastening having a slit entering end and for moving said fastening into the line of drive of said tool, and a knife mounted on said member and arranged to form a slit in the end of the fastening material upon movement of said member to move the fastening into the line of drive of the fastening inserting tool, whereby when the fastening meets an excessive resistance its entering end spreads to anchor the fastening in the work.

12. In a machine for inserting fastenings, a fastening inserting tool arranged to insert fastenings into a work piece, a member for severing a fastening from a length of fastening material and for moving the fastening into the line of drive of said tool, and a knife mounted on said member and arranged to form a slit in the end of the fastening material at an angle to the longitudinal median line of the fastening material, whereby the slit entering end of the fastening spreads when the fastening meets a predetermined resistance.

13. In a machine for inserting fastenings, a tool acting both as an awl to form a fastening receiving hole in a work piece and as a driver for inserting a fastening in said hole, a member for severing a fastening from a length of fastening material and for moving the fastening into the line of drive of said tool, and a knife mounted on said member and arranged to form a slit intersecting the longitudinal axis of the fastening ma terial, whereby when the fastening meets an excessive resistance its entering end spreads to anchor the fastening in the Work.

14. In a fastening inserting machine, a tool acting as an awl to form a fastening receiving hole in a work piece and as a driver to insert a fastening in said hole, a member for severing a fastening from a length of fastening material and for moving the fastening into the line of drive of said tool, and a knife mounted on said member and arranged, upon movement of said member to move the fastening into the line of drive of the fastening inserting tool, to form a slit intersecting the longitudinal axis of the fastening material at the end of said fastening material, whereby when the fastening meets an excessive resistance its entering end spreads to anchor the fastening in the work.

15. In a fastening inserting machine, a tool acting as an awl to form a fastening receiving hole in a work piece and as a driver to insert a peg in said hole, a member for severing a peg from a length of fastening material and for moving the peg into the line of drive of said tool, and a knife mounted on said member and arranged, upon movement of said member to move the peg into the line of drive of the fastening inserting tool, to form a slit intersecting the longitudinal axis of the fastening material at the end of said fastening material, whereby when the peg meets an excessive resistance its entering end spreads to anchor the peg in the work. 1

16. In a machine for inserting fastenings, a tool acting as an awl to form a fastening receiving hole in a work piece and as a driver to insert a fastening in said hole, a member for severing from a length of fastening material a fastening having a slit at its entering end and for moving said fastening into alinement with the said tool, and means mounted on said member and arranged, upon movement of said member into alinement with the tool, to form a slit intersecting the longitudinal median line of the fastening at the end of the fastening material, whereby when the fastening meets an excessive resistance its entering end spreads, thereby anchoring the fastening in the work.

1'7. That improvement in methods of inserting fastenings, which comprises severing a fastening from a length of fastening material, forming a slit in the entering end of the fastening to cause the fastening to broom when the fastening has passed through a work piece into which it is driven, and driving the fastening into the work piece.

18. That improvement in methods of inserting fastenings, which comprises forming a slit at the end of a length of fastening material intersecting the longitudinal axis of said material to cause a fastening formed from said length of material to broom when the fastening has passed through a work piece into which it is driven, thereafter severing a fastening from the length of fastening material, and driving said fastening into the work piece.

FRED N. LA CHAPELLE. 

